Power-monotone sequences and integrability of trigonometric series. Németh, J. — 2003 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Power-monotone sequences and Fourier series with positive coefficients. Németh, J. — 2001 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Note on the converses of inequalities of Hardy and Littlewood. Németh, J. — 2001 Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]